Abstract
Patients with Borderline Personality Disorder (BPD), particularly with comorbid trauma-disorders, show an attentional bias towards angry facial expressions. This is often interpreted to reflect increased anxiety and sensitivity to social threats. Given BPDs severe problems in reacting to and interpreting social communication, we investigated whether this threat bias extends to social orienting. Using a gaze-cueing task, we assessed whether centrally presented dynamic fearful and happy gaze stimuli promote the detection of peripherally presented targets. Groups with BPD (N=50) and other personality disorders (OPD, N=51) were compared to healthy controls (HC, N=46), and evaluated on the independent influence of traumatic experience, trait anxiety and trait anger. Across groups we find reliable gaze-cueing. In line with earlier evidence, trait anxiety predicts faster detection of targets signaled by a fearful gaze in HCs. This threat bias is however not present in BPDs and OPDs, thus the threat bias in BPD does not extend to social orienting. Instead, self-experienced trauma predicts amplified gaze-cueing in BPDs, but reduced gaze-cueing in OPDs. This not only emphasizes the importance of evaluating trauma exposure in personality disorders, but also suggests that the childhood adversity typically associated with the development of BPD promotes increased social orienting.
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